Legacy applications are typically monolithic, massive, and inflexible, comprising millions of lines of code. They are neither modular nor modern. It's very difficult to bring in any changes on particular portions of them. However, they have been contributing immensely in successfully running a majority of the business behemoths across the globe. Mainframe servers are the most powerful and high-performance IT infrastructures hosting and running a variety of complex legacy applications. Though mission-critical applications are being run on mainframes, modern-day computing mandates for a kind of marriage between mainframe computing and web-scale computing. That is, we need easily-manageable and -maintainable applications. On the infrastructure side, we need open, highly compartmentalized, programmable, optimized, and organized...
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